Question

Summary of all bacteri and fungi for agriculture

Answer 1

Intensive agricultural practices and cultivation of exhaustive crops has deteriorated soil fertility and its quality in agroecosystems. According to an estimate, such practices will convert 30% of the total world cultivated soil into degraded land by 2020. Soil structure and fertility loss are one of the main causes of soil degradation. They are also considered as a major threat to crop production and food security for future generations. Implementing safe and environmental friendly technology would be viable solution for achieving sustainable restoration of degraded soils. Bacterial and fungal inocula have a potential to reinstate the fertility of degraded land through various processes. These microorganisms increase the nutrient bioavailability through nitrogen fixation and mobilization of key nutrients (phosphorus, potassium and iron) to the crop plants while remediate soil structure by improving its aggregation and stability. Success rate of such inocula under field conditions depends on their antagonistic or synergistic interaction with indigenous microbes or their inoculation with organic fertilizers. Co-inoculation of bacteria and fungi with or without organic fertilizer are more beneficial for reinstating the soil fertility and organic matter content than single inoculum. Such factors are of great importance when considering bacteria and fungi inocula for restoration of degraded soils. The overview of presented mechanisms and interactions will help agriculturists in planning sustainable management strategy for reinstating the fertility of degraded soil and assist them in reducing the negative impact of artificial fertilizers on our environment.

Answer 2

Answer:

Earth is like a patient whose health is declining and it is our duty to improve it. In 1987, the term Sustainable Development was used by the World Commission on Environment and Development. A zoo in Lukasa, Zambia has a cage in which a sign reads ‘The World’s most dangerous animal’ and inside there is a mirror. It gives a message that human beings are the most dangerous animals. Brandt Commission raised a question “Are we to leave our successors a scorched planet of advancing deserts, impoverished landscapes and ailing environment?”

There are four principal biological systems that form the foundation of the global economic system - fisheries, grasslands, forests, and croplands. These four systems also provide food and raw materials for industries except for minerals and synthetics. With these systems becoming unsustainable, fisheries will collapse, the forest will slowly disappear, grasslands will turn into a barren wasteland and croplands will become worse.

In poor countries, forests are being cut down for fuelwood which is used for cooking purposes. There are some areas where the cost of fuelwood is more than the cost of food. It is leading to deforestation at an alarming rate.

One of the reasons for the exploitation of the environment is the increasing population. It is observed that about one million population is increasing in every four days. This is not a good sign. There is an urgent need to control overpopulation in the world. Development is the best contraceptive for this problem as it will help in reduction in fertility, increase in education and income and improvement in health.

Explanation: